8. A rocket has a mass of 1200 kg. It is launched with an initial thrust of 20000 N. The air resistance at launch is negligible. What is the magnitude of the acceleration of the rocket, at the launch? =
10
m/s)​

Athin, square metal plate measures 14 cm on each side and has emissivity of 0.60. the plate is heated to a temperature of 745°c. what is the rate at which the plate radiates energy ? the stefan-boltzmann constant is 5.67 × 10-8 w/(m2 ? k4). remember that the plate will radiate energy from both its top and bottom surfaces.

Awoman stands a distance d from a loud motor that emits sound uniformly in all directions. the sound intensity at her position is an uncomfortable 2.0×10-3 w/m2. at a distance 2.6 times as far from the motor, what are (a) the sound intensity and (b) the sound intensity level relative to the threshold of hearing?

What is meant by the statement" the melting poin of glycerine is 13 degree celsius